Installed 2 DW-200 Dual technology wall switch occupancy sensor in both of our bathrooms. Why keeping the water boiling if we don’t want hot tea? Someone told me that and it is a valid comment, during service the bathrooms are occupied often, before we installed the sensor the exhaust fan and lights will be on all times, now as soon as you come in lights go on, the neat feature about the sensor is that not only detects body heat (infrared motion) but is also ultrasonic and detects changes in